British spelling vs desensitising

British spelling is a noun but desensitising is not a noun.

Word	Noun	Adjective	Verb	Adverb
British spelling	Yes	No	No	No
desensitising	No	Yes	No	No

British spelling (noun)	desensitising (noun)
English orthography used in the UK, Ireland and most of the Commonwealth (characterized by 'analyse', 'centre' and 'useable')

British spelling (adjective)	desensitising (adjective)
	making less susceptible or sensitive to either physical or emotional stimuli